/* roulang page: index */
:root{
    --brand-900:#0B2A24;
    --brand-700:#11453A;
    --brand-500:#1C6B57;
    --accent:#FF5A1F;
    --accent-soft:#FFE7DC;
    --bg:#F6F5F2;
    --surface:#FFFFFF;
    --ink:#12171A;
    --muted:#5B6664;
    --line:#E4E2DC;
    --ok:#12805C;
    --warn:#C2410C;
    --r-card:18px;
    --r-img:20px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(18,23,26,.04), 0 8px 24px -12px rgba(11,42,36,.18);
    --sh-2:0 18px 40px -16px rgba(11,42,36,.28);
    --ease:cubic-bezier(.2,.7,.2,1);
    --font-num:"Barlow Condensed","Oswald","DIN Alternate","Arial Narrow",system-ui,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  input,select,textarea{font:inherit;color:inherit;width:100%}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
  .no-scroll{overflow:hidden}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media(min-width:768px){.container{padding:0 24px}}
  @media(min-width:1024px){.container{max-width:1240px;padding:0 40px}}

  .section{padding:56px 0}
  @media(min-width:768px){.section{padding:72px 0}}
  @media(min-width:1024px){.section{padding:104px 0}}
  .section-tight{padding:48px 0}
  @media(min-width:1024px){.section-tight{padding:72px 0}}

  /* ============ Header ============ */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:80;height:72px;
    background:rgba(246,245,242,.88);
    -webkit-backdrop-filter:saturate(160%) blur(12px);
    backdrop-filter:saturate(160%) blur(12px);
    border-bottom:1px solid transparent;
    transition:height .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .site-header.is-scrolled{height:64px;background:rgba(246,245,242,.97);border-bottom-color:var(--line);box-shadow:0 8px 28px -20px rgba(11,42,36,.55)}
  .header-inner{height:100%;display:flex;align-items:center;gap:20px}
  .logo{display:flex;align-items:baseline;gap:8px;flex:none}
  .logo-mark{font-size:21px;font-weight:800;letter-spacing:.02em;color:var(--brand-900);line-height:1}
  .logo-sub{font-size:12px;font-weight:400;letter-spacing:.12em;color:var(--muted);line-height:1}
  .main-nav{display:none;align-items:center;gap:2px;margin-left:auto}
  @media(min-width:1024px){.main-nav{display:flex}}
  .nav-link{position:relative;padding:9px 14px;font-size:15px;color:var(--muted);border-radius:10px;transition:color .22s var(--ease),background .22s var(--ease)}
  .nav-link:hover{color:var(--brand-900);background:rgba(17,69,58,.06)}
  .nav-link.active{color:var(--brand-900);font-weight:600}
  .nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;border-radius:2px;background:var(--accent)}
  .header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
  @media(min-width:1024px){.header-actions{margin-left:0}}
  .status-pill{display:none;align-items:center;gap:7px;font-size:12px;letter-spacing:.08em;color:var(--ok);background:rgba(18,128,92,.09);border:1px solid rgba(18,128,92,.22);padding:6px 11px;border-radius:var(--r-pill);white-space:nowrap}
  @media(min-width:1280px){.status-pill{display:inline-flex}}
  .status-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);animation:pulse 1.8s infinite}
  @keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(18,128,92,.5)}70%{box-shadow:0 0 0 8px rgba(18,128,92,0)}}
  .badge-channel{display:none;font-size:12px;letter-spacing:.12em;padding:6px 11px;border-radius:8px;background:var(--accent-soft);color:#8A2C05;border:1px solid rgba(255,90,31,.28);white-space:nowrap}
  @media(min-width:1024px){.badge-channel{display:inline-flex}}
  .nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;align-items:center}
  @media(min-width:1024px){.nav-toggle{display:none}}
  .nav-toggle span{display:block;width:17px;height:2px;border-radius:2px;background:var(--brand-900)}

  /* ============ Buttons ============ */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-weight:600;font-size:15px;line-height:1;padding:15px 26px;border:1px solid transparent;white-space:nowrap;transition:background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease),transform .2s var(--ease),box-shadow .26s var(--ease)}
  .btn .arr{transition:transform .26s var(--ease)}
  .btn:hover .arr{transform:translateX(4px)}
  .btn:active{transform:scale(.98)}
  .btn-sm{padding:11px 20px;font-size:14px}
  .btn-primary{background:var(--accent);color:#1A1207;box-shadow:0 10px 24px -14px rgba(255,90,31,.95)}
  .btn-primary:hover{background:#F04A0F;box-shadow:var(--sh-2)}
  .btn-ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
  .btn-ghost:hover{background:#fff;border-color:#fff;color:var(--brand-900)}
  .btn-outline{background:transparent;border-color:var(--line);color:var(--brand-900)}
  .btn-outline:hover{background:var(--brand-900);border-color:var(--brand-900);color:#fff}
  .btn-block{width:100%}

  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700);background-image:linear-gradient(var(--accent),var(--accent));background-repeat:no-repeat;background-position:0 100%;background-size:0 2px;padding-bottom:3px;transition:background-size .28s var(--ease),color .22s var(--ease)}
  .text-link:hover{color:var(--accent);background-size:100% 2px}
  .text-link .arr{transition:transform .26s var(--ease)}
  .text-link:hover .arr{transform:translateX(4px)}

  /* ============ Hero ============ */
  .hero{position:relative;background:var(--brand-900);color:#fff;padding:126px 0 0;overflow:hidden;isolation:isolate}
  @media(min-width:1024px){.hero{padding-top:150px}}
  .hero-bg{position:absolute;inset:0;z-index:-2}
  .hero-bg img{width:100%;height:100%;object-fit:cover}
  .hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(122deg,rgba(11,42,36,.96) 0%,rgba(11,42,36,.88) 42%,rgba(17,69,58,.74) 100%)}
  .hero::before{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:72px 72px;pointer-events:none}
  .hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:44px;align-items:center;padding-bottom:52px}
  @media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:60px;padding-bottom:76px}}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;color:#FFC7AD;border:1px solid rgba(255,90,31,.42);background:rgba(255,90,31,.14);padding:7px 15px;border-radius:var(--r-pill)}
  .hero h1{margin-top:20px;font-size:clamp(29px,4.3vw,50px);line-height:1.16;letter-spacing:-.01em;font-weight:800;color:#fff;max-width:20ch}
  .hero-sub{margin-top:20px;font-size:16.5px;line-height:1.78;color:rgba(255,255,255,.78);max-width:48ch}
  @media(min-width:1024px){.hero-sub{font-size:18.5px}}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .hero-badges li{font-size:13px;letter-spacing:.03em;color:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.07);padding:7px 15px;border-radius:var(--r-pill)}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
  .hero-visual{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid rgba(255,255,255,.14);box-shadow:0 30px 70px -30px rgba(0,0,0,.7)}
  .hero-visual > img{width:100%;aspect-ratio:16/11;object-fit:cover}
  .hero-float{position:absolute;left:16px;bottom:16px;display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.97);border-radius:14px;padding:12px 16px;box-shadow:var(--sh-1)}
  .hero-float-num{font-family:var(--font-num);font-size:30px;font-weight:700;line-height:1;color:var(--brand-900)}
  .hero-float-num em{font-size:13px;font-style:normal;margin-left:2px;font-family:inherit}
  .hero-float-txt{font-size:12.5px;line-height:1.45;color:var(--muted);max-width:8em}
  .hero-stats{position:relative;display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid rgba(255,255,255,.16)}
  @media(min-width:768px){.hero-stats{grid-template-columns:repeat(4,1fr)}}
  .hero-stat{padding:22px 18px;border-right:1px solid rgba(255,255,255,.16);border-bottom:1px solid rgba(255,255,255,.16)}
  .hero-stat:nth-child(2n){border-right:0}
  @media(min-width:768px){
    .hero-stat:nth-child(2n){border-right:1px solid rgba(255,255,255,.16)}
    .hero-stat:nth-child(4n),.hero-stat:last-child{border-right:0}
    .hero-stat{border-bottom:0}
  }
  .hero-stat-num{display:block;font-family:var(--font-num);font-size:30px;font-weight:700;line-height:1;color:#fff;letter-spacing:-.01em}
  .hero-stat-num span{font-size:13px;font-weight:400;margin-left:4px;letter-spacing:0;color:rgba(255,255,255,.72);font-family:inherit}
  .hero-stat-label{display:block;margin-top:9px;font-size:13px;color:rgba(255,255,255,.68);line-height:1.55}

  /* ============ Section head ============ */
  .section-head{margin-bottom:36px;max-width:56ch}
  .section-eyebrow{display:inline-block;font-size:12px;letter-spacing:.18em;font-weight:700;color:var(--accent)}
  .section-head h2{margin-top:12px;font-size:clamp(23px,3.1vw,37px);line-height:1.24;font-weight:700;letter-spacing:-.01em}
  .section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.8}
  .head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
  .head-row .section-head{margin-bottom:0}

  /* ============ Pain list ============ */
  .pain-list{border-top:1px solid var(--line)}
  .pain-item{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;padding:24px 6px 24px 20px;border-bottom:1px solid var(--line);transition:background .26s var(--ease),padding-left .26s var(--ease)}
  .pain-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .3s var(--ease)}
  .pain-item:hover{background:rgba(17,69,58,.04);padding-left:28px}
  .pain-item:hover::before{transform:scaleY(1)}
  .pain-no{font-family:var(--font-num);font-size:15px;font-weight:700;letter-spacing:.1em;color:var(--accent)}
  .pain-q{font-size:16.5px;font-weight:600;line-height:1.55}
  @media(min-width:768px){.pain-q{font-size:20px}}
  .pain-arrow{font-size:19px;color:var(--muted);transition:transform .26s var(--ease),color .26s var(--ease)}
  .pain-item:hover .pain-arrow{transform:translateX(6px);color:var(--accent)}

  /* ============ Solution grid ============ */
  .solution-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media(min-width:768px){.solution-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
  @media(min-width:1024px){.solution-grid{grid-template-columns:repeat(4,1fr)}}
  .solution-card{display:flex;flex-direction:column;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
  .solution-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(28,107,87,.4)}
  @media(min-width:1024px){.solution-card.is-feature{grid-column:span 2;grid-row:span 2;padding:30px}}
  .solution-cover{border-radius:14px;overflow:hidden;aspect-ratio:16/9;background:linear-gradient(135deg,var(--brand-700),var(--brand-900))}
  .solution-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
  .solution-card:hover .solution-cover img{transform:scale(1.04)}
  .card-no{font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--accent)}
  .solution-card h3{font-size:19px;font-weight:700;line-height:1.42;letter-spacing:-.01em}
  .solution-points{display:flex;flex-direction:column;gap:9px}
  .solution-points li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.68;color:var(--muted)}
  .solution-points li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:2px;background:var(--brand-500);opacity:.65}
  .card-foot{margin-top:auto;padding-top:10px}

  /* ============ Stats band ============ */
  .stats-band{position:relative;background:var(--brand-900);color:#fff;padding:60px 0;overflow:hidden}
  @media(min-width:1024px){.stats-band{padding:92px 0}}
  .stats-band::after{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(255,90,31,.22),transparent 70%)}
  .stats-head{position:relative;margin-bottom:44px;max-width:48ch}
  .stats-head h2{font-size:clamp(23px,3.1vw,36px);line-height:1.24;font-weight:700}
  .stats-head p{margin-top:14px;font-size:15.5px;color:rgba(255,255,255,.68);line-height:1.8}
  .stats-grid{position:relative;display:grid;grid-template-columns:1fr;gap:30px}
  @media(min-width:640px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.stats-grid{grid-template-columns:repeat(4,1fr);gap:38px}}
  .stat-item{border-left:3px solid var(--accent);padding-left:20px}
  .stat-value{font-family:var(--font-num);font-size:54px;line-height:1;font-weight:700;letter-spacing:-.02em;color:#fff}
  @media(min-width:1024px){.stat-value{font-size:68px}}
  .stat-value small{font-family:inherit;font-size:17px;font-weight:400;margin-left:6px;letter-spacing:0;color:rgba(255,255,255,.8)}
  .stat-label{margin-top:12px;font-size:13.5px;line-height:1.6;color:rgba(255,255,255,.68)}

  /* ============ Posts ============ */
  .post-grid{display:grid;grid-template-columns:1fr;gap:22px}
  @media(min-width:768px){.post-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
  @media(min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr)}}
  .post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
  .post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(28,107,87,.38)}
  .post-cover{display:block;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,var(--brand-700),var(--brand-900))}
  .post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
  .post-card:hover .post-cover img{transform:scale(1.04)}
  .post-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px;flex:1}
  .post-chip{align-self:flex-start;font-size:12px;letter-spacing:.08em;padding:4px 10px;border-radius:8px;background:rgba(28,107,87,.1);color:var(--brand-700);border:1px solid rgba(28,107,87,.18)}
  .post-title{font-size:17px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .post-title a:hover{color:var(--brand-700)}
  .post-excerpt{font-size:14px;line-height:1.72;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
  .post-more{display:inline-flex;align-items:center;gap:5px;font-weight:600;color:var(--brand-700);transition:color .22s var(--ease)}
  .post-more .arr{transition:transform .26s var(--ease)}
  .post-more:hover{color:var(--accent)}
  .post-more:hover .arr{transform:translateX(4px)}
  .empty-state{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--surface);color:var(--muted);text-align:center;font-size:15px}
  .empty-state svg{width:38px;height:38px;stroke:var(--brand-500);stroke-width:1.5;fill:none;opacity:.7}

  /* ============ Flow ============ */
  .flow{display:grid;grid-template-columns:1fr;gap:26px}
  @media(min-width:768px){.flow{grid-template-columns:repeat(4,1fr);gap:20px}}
  .flow-step{position:relative;padding-top:38px}
  .flow-step::before{content:"";position:absolute;top:11px;left:26px;right:-20px;height:1px;background:var(--line);display:none}
  @media(min-width:768px){.flow-step::before{display:block}}
  .flow-step:last-child::before{display:none}
  .flow-dot{position:absolute;top:0;left:0;width:24px;height:24px;border-radius:50%;border:1px solid var(--line);background:var(--surface);display:flex;align-items:center;justify-content:center;font-family:var(--font-num);font-size:11px;font-weight:700;color:var(--brand-700)}
  .flow-step.is-current .flow-dot{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 8px 18px -10px rgba(255,90,31,.9)}
  .flow-step h3{font-size:17px;font-weight:700}
  .flow-step p{margin-top:9px;font-size:14px;line-height:1.72;color:var(--muted)}

  /* ============ FAQ ============ */
  .faq-list{border-top:1px solid var(--line);max-width:900px}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;min-height:64px;padding:20px 4px;font-size:16px;font-weight:600;line-height:1.55;transition:color .24s var(--ease)}
  @media(min-width:768px){.faq-q{font-size:17px}}
  .faq-q:hover{color:var(--brand-700)}
  .faq-icon{flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:15px;line-height:1;color:var(--brand-700);transition:transform .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease)}
  .faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--accent);border-color:var(--accent);color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
  .faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.82;color:var(--muted);max-width:74ch}

  /* ============ Consult form ============ */
  .consult-wrap{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:var(--sh-1)}
  @media(min-width:1024px){.consult-wrap{display:grid;grid-template-columns:.88fr 1.12fr;gap:52px;padding:48px}}
  .consult-copy h2{margin-top:12px;font-size:clamp(23px,3.1vw,36px);line-height:1.24;font-weight:700}
  .consult-copy > p{margin-top:16px;font-size:16px;line-height:1.8;color:var(--muted)}
  .consult-points{margin-top:26px;display:flex;flex-direction:column;gap:14px}
  .consult-points li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--ink);line-height:1.7}
  .consult-points li b{display:inline-flex;align-items:center;justify-content:center;flex:none;width:22px;height:22px;border-radius:7px;background:var(--accent-soft);color:#9A3208;font-size:12px;font-weight:700;margin-top:3px}
  .form-card{background:#FCFBF9;border:1px solid var(--line);border-radius:var(--r-card);padding:22px}
  @media(min-width:768px){.form-card{padding:26px}}
  .form-grid{display:grid;grid-template-columns:1fr;gap:16px}
  @media(min-width:640px){.form-grid{grid-template-columns:1fr 1fr}}
  .field{display:flex;flex-direction:column;gap:8px}
  .field.full{grid-column:1/-1}
  .field label{font-size:13px;font-weight:600;color:var(--ink)}
  .field input,.field select,.field textarea{height:46px;border:1px solid var(--line);border-radius:12px;padding:0 14px;background:#fff;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
  .field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
  .field input::placeholder,.field textarea::placeholder{color:#9AA3A0}
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(28,107,87,.15)}
  .checkline{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.65;color:var(--muted)}
  .checkline input{width:16px;height:16px;flex:none;margin-top:3px;accent-color:var(--brand-500)}
  .form-note{margin-top:12px;font-size:12.5px;line-height:1.7;color:var(--muted)}
  .form-success{display:none;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:52px 24px;text-align:center}
  .form-success.is-visible{display:flex}
  .form-success .ok-ring{width:52px;height:52px;border-radius:50%;background:rgba(18,128,92,.1);border:1px solid rgba(18,128,92,.28);display:flex;align-items:center;justify-content:center;color:var(--ok);font-size:22px}
  .form-success h3{font-size:19px;font-weight:700}
  .form-success p{font-size:14.5px;color:var(--muted);max-width:32ch;line-height:1.75}

  /* ============ Footer ============ */
  .site-footer{margin-top:0;background:var(--brand-900);color:rgba(255,255,255,.72);padding:60px 0 0}
  @media(min-width:1024px){.site-footer{padding:88px 0 0}}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:38px}
  @media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.15fr;gap:34px}}
  .footer-logo{display:flex;align-items:baseline;gap:8px}
  .footer-logo .logo-mark{color:#fff}
  .footer-logo .logo-sub{color:rgba(255,255,255,.55)}
  .footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;max-width:36ch;color:rgba(255,255,255,.68)}
  .footer-col h4{font-size:13px;font-weight:600;letter-spacing:.14em;color:#fff;margin-bottom:16px}
  .footer-col a,.footer-col span.f-link{display:block;font-size:14px;padding:6px 0;color:rgba(255,255,255,.68);transition:color .22s var(--ease),transform .22s var(--ease)}
  .footer-col a:hover{color:var(--accent);transform:translateX(3px)}
  .footer-col .f-meta{font-size:13px;color:rgba(255,255,255,.5);padding:4px 0}
  .footer-bottom{margin-top:52px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.54)}
  .footer-bottom a{color:rgba(255,255,255,.7);transition:color .22s var(--ease)}
  .footer-bottom a:hover{color:var(--accent)}
  .footer-links{display:flex;flex-wrap:wrap;gap:12px 18px}

  /* ============ Mobile drawer ============ */
  .mobile-drawer{position:fixed;inset:0;z-index:110;display:none}
  .mobile-drawer.is-open{display:block}
  .drawer-mask{position:absolute;inset:0;background:rgba(11,42,36,.5);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
  .drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(320px,86%);background:var(--bg);padding:22px;display:flex;flex-direction:column;box-shadow:-20px 0 50px -30px rgba(11,42,36,.8);animation:slideIn .28s var(--ease)}
  @keyframes slideIn{from{transform:translateX(18px);opacity:.4}to{transform:translateX(0);opacity:1}}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
  .drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:18px;line-height:1;color:var(--brand-900)}
  .drawer-nav{display:flex;flex-direction:column;gap:4px;padding:20px 0;flex:1}
  .drawer-nav a{padding:13px 12px;border-radius:12px;font-size:15.5px;color:var(--ink);transition:background .22s var(--ease),color .22s var(--ease)}
  .drawer-nav a:hover{background:rgba(17,69,58,.06)}
  .drawer-nav a.active{background:var(--accent-soft);color:#8A2C05;font-weight:600}
  .drawer-cta{margin-top:auto}

  /* ============ Modal ============ */
  .modal{position:fixed;inset:0;z-index:130;display:none}
  .modal.is-open{display:block}
  .modal-mask{position:absolute;inset:0;background:rgba(11,42,36,.62);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
  .modal-panel{position:relative;z-index:2;width:min(520px,calc(100% - 32px));margin:8vh auto 0;max-height:84vh;overflow-y:auto;background:#fff;border-radius:20px;padding:26px;box-shadow:0 34px 70px -30px rgba(11,42,36,.7);animation:popIn .26s var(--ease)}
  @keyframes popIn{from{transform:translateY(12px) scale(.98);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}
  .modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:6px}
  .modal-head h3{font-size:20px;font-weight:700;line-height:1.4}
  .modal-close{width:34px;height:34px;flex:none;border-radius:10px;border:1px solid var(--line);background:#FCFBF9;font-size:18px;line-height:1;color:var(--brand-900);transition:background .22s var(--ease),color .22s var(--ease)}
  .modal-close:hover{background:var(--brand-900);color:#fff;border-color:var(--brand-900)}
  .modal-sub{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.72;margin-bottom:20px}

  /* ============ Reveal ============ */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
  .reveal.is-visible{opacity:1;transform:translateY(0)}

  @media (prefers-reduced-motion: reduce){
    *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
    .reveal{opacity:1;transform:none}
  }

/* roulang page: article */
:root{
    --brand-900:#0B2A24;
    --brand-700:#11453A;
    --brand-500:#1C6B57;
    --accent:#FF5A1F;
    --accent-soft:#FFE7DC;
    --bg:#F6F5F2;
    --surface:#FFFFFF;
    --ink:#12171A;
    --muted:#5B6664;
    --line:#E4E2DC;
    --ok:#12805C;
    --warn:#C2410C;
    --radius-card:18px;
    --radius-img:20px;
    --radius-pill:999px;
    --shadow-1:0 1px 2px rgba(18,23,26,.04), 0 8px 24px -12px rgba(11,42,36,.18);
    --shadow-2:0 18px 40px -16px rgba(11,42,36,.28);
    --ease:cubic-bezier(.2,.7,.2,1);
    --num-font:"Barlow Condensed","Oswald","DIN Alternate","Arial Narrow",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;
    font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
  input,select,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol{margin:0}
  ul,ol{padding:0;list-style:none}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  @media (min-width:1280px){.container{max-width:1280px}}
  @media (max-width:520px){.container{padding:0 18px}}
  .num{font-family:var(--num-font);font-variant-numeric:tabular-nums;letter-spacing:.02em}
  .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.94);
    backdrop-filter:saturate(1.4) blur(10px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .3s var(--ease), background .3s var(--ease);
  }
  .site-header.scrolled{box-shadow:0 6px 22px -14px rgba(11,42,36,.35)}
  .header-inner{
    display:flex;align-items:center;gap:28px;
    height:72px;transition:height .3s var(--ease);
  }
  .site-header.scrolled .header-inner{height:64px}
  .logo{display:flex;align-items:baseline;gap:8px;flex-shrink:0}
  .logo-mark{font-size:21px;font-weight:800;letter-spacing:.02em;color:var(--brand-900)}
  .logo-sub{font-size:11.5px;letter-spacing:.16em;color:var(--muted);font-weight:500}
  .main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
  .nav-link{
    position:relative;padding:8px 14px;font-size:14.5px;color:var(--muted);
    border-radius:10px;transition:color .25s var(--ease), background .25s var(--ease);
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--brand-900);background:rgba(28,107,87,.07)}
  .nav-link.active{color:var(--brand-900);font-weight:600}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
    background:var(--accent);border-radius:2px;
  }
  .header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
  .status-pill{
    display:inline-flex;align-items:center;gap:7px;
    font-size:12.5px;color:var(--brand-700);background:rgba(18,128,92,.09);
    border:1px solid rgba(18,128,92,.18);padding:5px 11px;border-radius:var(--radius-pill);
  }
  .status-pill .dot{
    width:7px;height:7px;border-radius:50%;background:var(--ok);
    box-shadow:0 0 0 0 rgba(18,128,92,.5);animation:pulse 2.2s infinite;
  }
  @keyframes pulse{
    0%{box-shadow:0 0 0 0 rgba(18,128,92,.45)}
    70%{box-shadow:0 0 0 8px rgba(18,128,92,0)}
    100%{box-shadow:0 0 0 0 rgba(18,128,92,0)}
  }
  .badge-channel{
    font-size:11.5px;letter-spacing:.12em;color:var(--accent);
    background:var(--accent-soft);border:1px solid rgba(255,90,31,.24);
    padding:5px 10px;border-radius:8px;
  }
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-pill);font-weight:600;letter-spacing:.01em;
    transition:transform .2s var(--ease), box-shadow .25s var(--ease),
               background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
    border:1px solid transparent;
  }
  .btn svg,.btn .arrow{transition:transform .25s var(--ease)}
  .btn-primary{background:var(--accent);color:#16211F}
  .btn-primary:hover{background:#F04E14;box-shadow:var(--shadow-2)}
  .btn-primary:hover .arrow{transform:translateX(4px)}
  .btn-primary:active{transform:scale(.98)}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
  .btn-ghost:hover{background:var(--brand-900);color:#fff;border-color:var(--brand-900)}
  .btn-sm{padding:9px 18px;font-size:14px}
  .btn-lg{padding:14px 28px;font-size:15.5px}
  .btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:12px;
    border:1px solid var(--line);flex-direction:column;align-items:center;justify-content:center;gap:4px;
    background:#fff;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px;transition:.28s var(--ease)}
  .nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .drawer-cta{display:none}

  @media (max-width:1023px){
    .main-nav{
      position:fixed;top:0;right:0;z-index:70;
      width:280px;height:100vh;margin:0;padding:88px 22px 96px;
      flex-direction:column;align-items:stretch;gap:4px;
      background:#fff;box-shadow:-18px 0 44px -22px rgba(11,42,36,.4);
      transform:translateX(102%);transition:transform .34s var(--ease);
      overflow-y:auto;
    }
    .main-nav.open{transform:translateX(0)}
    .nav-link{padding:13px 14px;font-size:16px}
    .nav-link.active::after{left:14px;right:auto;width:22px;bottom:8px}
    .drawer-cta{
      display:flex;margin-top:22px;justify-content:center;
      padding:13px 18px;border-radius:var(--radius-pill);
      background:var(--accent);color:#16211F;font-weight:600;
    }
    .nav-toggle{display:flex}
    .status-pill,.badge-channel{display:none}
  }
  @media (max-width:520px){
    .logo-sub{display:none}
    .btn-sm{padding:8px 14px;font-size:13px}
  }

  /* ---------- 面包屑 ---------- */
  .crumb-bar{background:var(--bg);border-bottom:1px solid var(--line)}
  .crumbs{
    display:flex;flex-wrap:wrap;gap:8px;align-items:center;
    padding:14px 0;font-size:13px;color:var(--muted);
  }
  .crumbs a{transition:color .2s var(--ease)}
  .crumbs a:hover{color:var(--brand-500)}
  .crumbs .sep{color:#B9BDB8}
  .crumbs .current{color:var(--ink);font-weight:500}

  /* ---------- 文章头 ---------- */
  .article-head{padding:44px 0 34px;background:var(--bg)}
  .head-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;letter-spacing:.1em;padding:5px 11px;border-radius:8px;
    background:var(--accent-soft);color:var(--accent);border:1px solid rgba(255,90,31,.2);
  }
  .chip-plain{background:#fff;border:1px solid var(--line);color:var(--muted);letter-spacing:0}
  .article-title{
    font-size:clamp(27px,4.1vw,44px);line-height:1.22;font-weight:800;
    letter-spacing:-.01em;color:var(--brand-900);max-width:22ch;
  }
  @media (max-width:767px){.article-title{max-width:none}}
  .head-meta{
    display:flex;flex-wrap:wrap;gap:20px;margin-top:18px;
    font-size:13.5px;color:var(--muted);
  }
  .head-meta .num{font-size:14px;color:var(--brand-700)}
  .head-rule{height:3px;width:64px;background:var(--accent);border-radius:3px;margin-top:22px}

  /* ---------- 正文两栏 ---------- */
  .article-main{padding:34px 0 88px}
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:52px;align-items:start}
  .article-panel{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:40px 44px 44px;box-shadow:var(--shadow-1);
  }
  .article-cover{border-radius:var(--radius-img);overflow:hidden;margin-bottom:30px}
  .article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover}

  .article-content{max-width:72ch;font-size:17.5px;line-height:1.9;color:var(--ink)}
  .article-content p{margin:0 0 1.2em}
  .article-content strong{font-weight:700;color:var(--brand-900)}
  .article-content h2{
    font-size:clamp(21px,2.4vw,27px);line-height:1.35;font-weight:700;
    margin:2em 0 .75em;padding-left:14px;border-left:3px solid var(--accent);color:var(--brand-900);
  }
  .article-content h3{font-size:19px;font-weight:700;margin:1.7em 0 .6em;color:var(--brand-900)}
  .article-content h4{font-size:17px;font-weight:700;margin:1.4em 0 .5em}
  .article-content blockquote{
    margin:1.5em 0;padding:16px 22px;background:#FBFAF7;
    border-left:3px solid var(--accent);border-radius:0 14px 14px 0;color:var(--muted);
  }
  .article-content blockquote p:last-child{margin-bottom:0}
  .article-content ul,.article-content ol{margin:0 0 1.3em;padding-left:1.35em}
  .article-content ul li{list-style:disc;margin:.45em 0}
  .article-content ol li{list-style:decimal;margin:.45em 0}
  .article-content li::marker{color:var(--brand-500)}
  .article-content img{border-radius:16px;margin:1.5em 0}
  .article-content a{color:var(--brand-500);border-bottom:1px solid rgba(28,107,87,.35)}
  .article-content a:hover{color:var(--accent);border-bottom-color:var(--accent)}
  .article-content table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px}
  .article-content th,.article-content td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
  .article-content th{background:#EFEEE9;font-weight:600;color:var(--brand-900)}
  .article-content pre{
    background:#0F1F1B;color:#E4F1ED;padding:18px 20px;border-radius:14px;
    overflow-x:auto;font-size:14px;line-height:1.7;margin:1.5em 0;
  }
  .article-content code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.94em}
  .article-content :not(pre) > code{background:#EFEEE9;padding:2px 6px;border-radius:6px;color:var(--brand-700)}
  .article-content hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
  .article-content>*:first-child{margin-top:0}
  @media (max-width:767px){
    .article-content{font-size:16.5px;line-height:1.85}
    .article-content table{display:block;overflow-x:auto;white-space:nowrap}
  }

  .empty-state{
    text-align:center;padding:52px 20px;border:1px dashed var(--line);border-radius:var(--radius-card);
    background:#FBFAF7;
  }
  .empty-state svg{width:38px;height:38px;stroke:var(--muted);margin:0 auto 14px}
  .empty-state h3{font-size:19px;font-weight:700;color:var(--brand-900);margin-bottom:8px}
  .empty-state p{color:var(--muted);font-size:15px;margin-bottom:16px}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-700);
    background-image:linear-gradient(currentColor,currentColor);
    background-repeat:no-repeat;background-size:0 1px;background-position:0 100%;
    transition:background-size .28s var(--ease), color .2s var(--ease);
  }
  .text-link:hover{color:var(--accent);background-size:100% 1px}

  /* ---------- 右栏 ---------- */
  .side-col{display:grid;gap:22px;position:sticky;top:96px}
  .side-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px 22px 20px;box-shadow:var(--shadow-1);
  }
  .side-card h3{
    font-size:13px;letter-spacing:.14em;color:var(--muted);font-weight:600;margin-bottom:14px;
    padding-bottom:12px;border-bottom:1px solid var(--line);
  }
  .toc-list{display:grid;gap:2px}
  .toc-list a{
    display:block;font-size:14.5px;color:var(--muted);padding:8px 10px;border-radius:10px;
    border-left:2px solid transparent;transition:.22s var(--ease);
  }
  .toc-list a:hover{color:var(--brand-900);background:#F5F4F0;border-left-color:var(--accent)}
  .toc-empty{font-size:14px;color:var(--muted);padding:6px 2px}
  .entry-list{display:grid;gap:10px}
  .entry-item{
    display:block;padding:14px 15px;border:1px solid var(--line);border-radius:14px;
    background:#FBFAF7;transition:.24s var(--ease);
  }
  .entry-item:hover{transform:translateY(-3px);border-color:rgba(28,107,87,.45);box-shadow:var(--shadow-1);background:#fff}
  .entry-item strong{display:block;font-size:15px;color:var(--brand-900);margin-bottom:4px}
  .entry-item span{font-size:13px;color:var(--muted);line-height:1.6}
  .side-back{margin-top:4px}
  .side-back a{
    display:flex;align-items:center;justify-content:space-between;gap:8px;
    font-size:14px;font-weight:600;color:var(--brand-700);
    padding:11px 14px;border-radius:12px;border:1px solid var(--line);background:#fff;
    transition:.24s var(--ease);
  }
  .side-back a:hover{background:var(--brand-900);color:#fff;border-color:var(--brand-900)}
  @media (max-width:1023px){
    .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
    .side-col{position:static;grid-template-columns:repeat(2,minmax(0,1fr));order:2}
    .article-panel{padding:28px 22px 32px}
  }
  @media (max-width:640px){
    .side-col{grid-template-columns:minmax(0,1fr)}
  }

  /* ---------- 文末 ---------- */
  .article-foot{margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
  .chip-row{display:flex;flex-wrap:wrap;gap:9px;align-items:center}
  .chip-row .label{font-size:13px;color:var(--muted);letter-spacing:.08em}
  .chip-item{
    font-size:13px;padding:6px 13px;border-radius:var(--radius-pill);
    background:#F5F4F0;border:1px solid var(--line);color:var(--brand-700);
    transition:.22s var(--ease);
  }
  .chip-item:hover{background:var(--accent-soft);border-color:rgba(255,90,31,.35);color:var(--accent)}
  .foot-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:26px}
  .foot-nav a{
    display:block;padding:18px 20px;border:1px solid var(--line);border-radius:16px;background:#FBFAF7;
    transition:.26s var(--ease);
  }
  .foot-nav a:hover{transform:translateY(-3px);background:#fff;box-shadow:var(--shadow-1);border-color:rgba(28,107,87,.4)}
  .foot-nav .kicker{font-size:12px;letter-spacing:.12em;color:var(--muted);display:block;margin-bottom:6px}
  .foot-nav strong{font-size:16px;color:var(--brand-900)}
  @media (max-width:640px){.foot-nav{grid-template-columns:minmax(0,1fr)}}

  /* ---------- CTA 条 ---------- */
  .cta-strip{background:#EFEEE9;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .cta-strip-inner{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
    padding:40px 0;
  }
  .cta-strip h2{font-size:clamp(20px,2.6vw,28px);font-weight:800;color:var(--brand-900);line-height:1.35}
  .cta-strip p{color:var(--muted);font-size:15px;margin-top:8px;max-width:52ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  @media (max-width:767px){.cta-strip-inner{padding:32px 0}}

  /* ---------- 返回顶部 ---------- */
  .back-top{
    position:fixed;right:20px;bottom:24px;z-index:55;
    width:46px;height:46px;border-radius:50%;
    background:var(--brand-900);color:#fff;display:flex;align-items:center;justify-content:center;
    box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transform:translateY(12px);
    transition:.3s var(--ease);
  }
  .back-top.show{opacity:1;pointer-events:auto;transform:none}
  .back-top:hover{background:var(--brand-500)}
  .back-top:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--brand-900);color:#D8E4E0;padding:62px 0 26px;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
  .footer-logo{display:flex;align-items:baseline;gap:8px;margin-bottom:14px}
  .footer-logo .logo-mark{color:#fff;font-size:20px;font-weight:800}
  .footer-logo .logo-sub{color:rgba(216,228,224,.7);font-size:11.5px;letter-spacing:.16em}
  .footer-brand p{font-size:14px;line-height:1.85;color:rgba(216,228,224,.78);max-width:38ch}
  .footer-col h4{font-size:13px;letter-spacing:.14em;color:#fff;margin-bottom:14px;font-weight:600}
  .footer-col a,.footer-col .f-link{display:block;font-size:14px;color:rgba(216,228,224,.8);padding:5px 0;transition:color .22s var(--ease)}
  .footer-col a:hover{color:var(--accent)}
  .footer-col .f-meta{font-size:13px;color:rgba(216,228,224,.6);margin-top:10px;display:block}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
    margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
    font-size:13px;color:rgba(216,228,224,.7);
  }
  .footer-links{display:flex;flex-wrap:wrap;gap:18px;align-items:center}
  .footer-links a{transition:color .22s var(--ease)}
  .footer-links a:hover{color:var(--accent)}
  @media (max-width:1023px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (max-width:640px){
    .site-footer{padding:48px 0 22px}
    .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  }

  /* 入场动画 */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
  .reveal.in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important}
    .reveal{opacity:1;transform:none}
    html{scroll-behavior:auto}
  }

/* roulang page: category1 */
:root{
  --brand-900:#0B2A24;
  --brand-700:#11453A;
  --brand-500:#1C6B57;
  --accent:#FF5A1F;
  --accent-soft:#FFE7DC;
  --bg:#F6F5F2;
  --paper:#EFEEE9;
  --surface:#FFFFFF;
  --ink:#12171A;
  --muted:#5B6664;
  --line:#E4E2DC;
  --ok:#12805C;
  --warn:#C2410C;
  --radius-card:18px;
  --radius-img:20px;
  --radius-tag:8px;
  --shadow-1:0 1px 2px rgba(18,23,26,.04),0 8px 24px -12px rgba(11,42,36,.18);
  --shadow-2:0 18px 40px -16px rgba(11,42,36,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --header-h:72px;
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.site-body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
::selection{background:var(--accent-soft);color:var(--brand-900)}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{max-width:1280px;padding-left:40px;padding-right:40px}}

.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:104px 0}}
.section-tight{padding:44px 0}
@media(min-width:1024px){.section-tight{padding:64px 0}}

.sec-eyebrow{font-size:12px;letter-spacing:.18em;color:var(--brand-500);font-weight:600;margin:0 0 12px}
.sec-title{font-size:clamp(24px,3.4vw,40px);line-height:1.2;font-weight:800;letter-spacing:-.01em;color:var(--brand-900);margin:0}
.sec-lead{margin:16px 0 0;font-size:16px;line-height:1.85;color:var(--muted);max-width:70ch}
.sec-head{margin-bottom:36px}
@media(min-width:1024px){.sec-head{margin-bottom:48px}}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,242,.86);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-header.scrolled{
  background:rgba(246,245,242,.97);
  box-shadow:0 1px 2px rgba(18,23,26,.04),0 10px 28px -18px rgba(11,42,36,.35);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:var(--header-h);transition:height .3s var(--ease);
}
.logo{display:flex;align-items:baseline;gap:8px;flex:0 0 auto}
.logo-mark{font-size:22px;font-weight:800;letter-spacing:-.01em;color:var(--brand-900);line-height:1}
.logo-sub{font-size:12px;font-weight:400;color:var(--muted);letter-spacing:.06em;line-height:1}
.main-nav{display:none}
@media(min-width:1024px){
  .main-nav{display:flex;align-items:center;gap:30px;margin-left:40px;margin-right:auto}
}
.nav-link{position:relative;font-size:15px;color:var(--ink);padding:6px 0;transition:color .25s var(--ease)}
.nav-link:hover{color:var(--brand-500)}
.nav-link.active{color:var(--brand-900);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--accent);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.status-pill{
  display:none;align-items:center;gap:7px;font-size:12px;color:#0E6B4E;
  background:#E6F4EF;border-radius:999px;padding:5px 11px;white-space:nowrap;
}
@media(min-width:1024px){.status-pill{display:inline-flex}}
.status-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);animation:pulse 1.8s infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(18,128,92,.45)}
  70%{box-shadow:0 0 0 7px rgba(18,128,92,0)}
  100%{box-shadow:0 0 0 0 rgba(18,128,92,0)}
}
.badge-channel{
  display:none;font-size:12px;letter-spacing:.12em;color:var(--warn);
  background:var(--accent-soft);border-radius:var(--radius-tag);padding:5px 11px;white-space:nowrap;
}
@media(min-width:768px){.badge-channel{display:inline-block}}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:0 10px;background:transparent;
  border:1px solid var(--line);border-radius:12px;cursor:pointer;
}
@media(min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:100%;height:2px;background:var(--brand-900);border-radius:2px;transition:transform .25s var(--ease),opacity .25s}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;border-radius:999px;
  padding:14px 24px;border:1px solid transparent;cursor:pointer;
  transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.btn svg{width:16px;height:16px;transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.btn-primary{background:var(--accent);color:var(--ink);box-shadow:0 8px 20px -12px rgba(255,90,31,.85)}
.btn-primary:hover{background:#E84A12;box-shadow:var(--shadow-2);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-900);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-900);color:#fff;border-color:var(--brand-900)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}

.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700);
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 2px;
  transition:background-size .28s var(--ease),color .25s var(--ease);padding-bottom:2px;
}
.text-link:hover{background-size:100% 2px;color:var(--brand-900)}
.text-link svg{width:14px;height:14px}

/* ============ Mobile drawer ============ */
.d-mask{
  position:fixed;inset:0;background:rgba(11,42,36,.5);z-index:90;
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.d-mask.open{opacity:1;pointer-events:auto}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(84vw,340px);z-index:95;
  background:var(--surface);padding:24px;display:flex;flex-direction:column;gap:2px;
  transform:translateX(102%);transition:transform .32s var(--ease);
  box-shadow:-20px 0 40px -24px rgba(11,42,36,.4);
}
.nav-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{background:none;border:1px solid var(--line);border-radius:10px;width:38px;height:38px;font-size:18px;color:var(--muted);cursor:pointer;line-height:1}
.drawer-link{
  display:block;padding:15px 4px;font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-link:hover{color:var(--brand-500);padding-left:8px}
.drawer-link.active{color:var(--brand-900);font-weight:700}
.drawer-cta{margin-top:auto;padding-top:20px}
@media(min-width:1024px){.nav-drawer,.d-mask{display:none}}

/* ============ Page hero ============ */
.breadcrumb{font-size:13px;color:var(--muted);padding:20px 0 0;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumb span{color:var(--line)}
.breadcrumb .current{color:var(--ink)}
.page-hero{
  position:relative;overflow:hidden;background:var(--paper);
  background-image:
    radial-gradient(circle at 88% 14%, rgba(28,107,87,.13), transparent 46%),
    radial-gradient(circle at 4% 96%, rgba(255,90,31,.10), transparent 44%);
  padding-bottom:44px;
}
@media(min-width:1024px){.page-hero{padding-bottom:56px}}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin:26px 0 0;
  font-size:12px;letter-spacing:.16em;font-weight:700;color:var(--brand-500);
}
.hero-eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.hero-title{
  font-size:clamp(30px,5.4vw,58px);line-height:1.1;letter-spacing:-.01em;
  font-weight:800;color:var(--brand-900);margin:16px 0 0;max-width:22ch;
}
.hero-desc{
  margin:20px 0 0;font-size:16px;line-height:1.85;color:var(--muted);max-width:64ch;
}
@media(min-width:1024px){.hero-desc{font-size:18px;line-height:1.8;max-width:68ch}}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:500;
  color:var(--brand-700);background:var(--surface);border:1px solid var(--line);
  border-radius:999px;padding:7px 15px;
}
.tag .t-dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}

.anchor-bar{
  position:sticky;top:var(--header-h);z-index:40;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;align-items:center;gap:26px;height:54px;
  overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-inner a{
  white-space:nowrap;font-size:14px;color:var(--muted);padding:4px 0;
  border-bottom:2px solid transparent;
  transition:color .25s var(--ease),border-color .25s var(--ease);
}
.anchor-inner a:hover{color:var(--brand-900);border-bottom-color:var(--accent)}

/* ============ Grid nav ============ */
.grid-nav{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(min-width:768px){.grid-nav{grid-template-columns:repeat(3,1fr);gap:16px}}
.grid-item{
  display:flex;flex-direction:column;gap:10px;padding:22px 20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.grid-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(28,107,87,.42)}
.grid-item:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.g-icon{
  width:42px;height:42px;border-radius:13px;background:var(--accent-soft);
  display:grid;place-items:center;color:var(--warn);
}
.g-icon svg{width:21px;height:21px}
.grid-item b{font-size:16px;font-weight:700;color:var(--brand-900);line-height:1.4}
.grid-item span{font-size:14px;color:var(--muted);line-height:1.7}

/* ============ Steps ============ */
.step-list{border-top:1px solid var(--line)}
.step-row{
  display:grid;grid-template-columns:50px 1fr;gap:16px;
  padding:24px 14px 24px 16px;border-bottom:1px solid var(--line);
  border-left:3px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
@media(min-width:768px){
  .step-row{grid-template-columns:68px 1fr 28px;gap:22px;align-items:center;padding:26px 20px 26px 18px}
}
.step-row:hover{background:var(--surface);border-left-color:var(--accent)}
.step-num{
  font-family:var(--font-num);font-size:24px;font-weight:600;color:var(--accent);
  letter-spacing:.03em;line-height:1;
}
.step-body b{display:block;font-size:18px;font-weight:700;color:var(--brand-900);margin-bottom:6px;line-height:1.5}
.step-body p{margin:0;font-size:15px;line-height:1.8;color:var(--muted);max-width:66ch}
.step-arrow{display:none;color:var(--line)}
@media(min-width:768px){.step-arrow{display:block;width:22px;height:22px;justify-self:end}}

/* ============ Split content ============ */
.split{display:grid;gap:28px;align-items:center}
@media(min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:56px}}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-img);box-shadow:var(--shadow-1);
}
@media(min-width:1024px){
  .split.reverse .split-media{order:2}
  .split.reverse .split-text{order:1}
}
.split-text h3{font-size:clamp(20px,2.4vw,28px);font-weight:800;color:var(--brand-900);margin:0 0 14px;line-height:1.35}
.split-text p{margin:0 0 14px;font-size:16px;line-height:1.9;color:var(--muted)}
.split-text p:last-of-type{margin-bottom:0}
.inline-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.fact{
  display:flex;flex-direction:column;gap:2px;padding:12px 16px;background:var(--surface);
  border:1px solid var(--line);border-radius:14px;min-width:120px;
}
.fact b{font-family:var(--font-num);font-size:22px;line-height:1;color:var(--brand-900);letter-spacing:.02em}
.fact span{font-size:12px;color:var(--muted)}

/* ============ Checklist ============ */
.check-grid{display:grid;gap:12px}
@media(min-width:768px){.check-grid{grid-template-columns:repeat(2,1fr);gap:14px}}
.check-item{
  display:flex;gap:12px;align-items:flex-start;padding:18px 20px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.check-item:hover{border-color:rgba(28,107,87,.42);box-shadow:var(--shadow-1)}
.check-item svg{width:18px;height:18px;flex:0 0 18px;margin-top:5px;color:var(--ok)}
.check-item p{margin:0;font-size:15px;line-height:1.8;color:var(--ink)}
.check-item p b{color:var(--brand-900)}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:20px 4px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--brand-900);line-height:1.6;
  transition:color .22s var(--ease);
}
@media(min-width:768px){.faq-q{font-size:17px}}
.faq-q:hover{color:var(--brand-500)}
.faq-q:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:8px}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;color:var(--brand-700);
  transition:transform .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease);
}
.faq-icon svg{width:13px;height:13px}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent-soft);border-color:var(--accent-soft);color:var(--warn)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding:0 4px 22px;font-size:15.5px;line-height:1.9;color:var(--muted);max-width:78ch}

/* ============ CTA bar ============ */
.cta-bar{
  background:var(--paper);border:1px solid var(--line);border-radius:24px;
  padding:30px 24px;display:flex;flex-direction:column;gap:22px;
}
@media(min-width:768px){
  .cta-bar{flex-direction:row;align-items:center;justify-content:space-between;padding:42px 46px;gap:32px}
}
.cta-bar h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;color:var(--brand-900);margin:0 0 10px;line-height:1.3}
.cta-bar p{margin:0;font-size:15px;line-height:1.8;color:var(--muted);max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

/* ============ Footer ============ */
.site-footer{background:var(--brand-900);color:#D8E2DF;padding:56px 0 0;margin-top:0}
@media(min-width:1024px){.site-footer{padding-top:72px}}
.footer-grid{display:grid;gap:34px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px}}
.footer-logo{display:inline-flex;align-items:baseline;gap:8px}
.footer-logo .logo-mark{color:#fff;font-size:22px;font-weight:800;letter-spacing:-.01em}
.footer-logo .logo-sub{color:#8FA9A2;font-size:12px;letter-spacing:.06em}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.85;color:#9DB3AD;max-width:38ch}
.footer-col h4{margin:0 0 16px;font-size:13px;font-weight:600;letter-spacing:.12em;color:#fff}
.footer-col a,.footer-col .f-link{
  display:block;font-size:14px;color:#9DB3AD;padding:6px 0;
  transition:color .22s var(--ease);
}
.footer-col a:hover{color:var(--accent)}
.f-meta{display:block;margin-top:14px;font-size:13px;color:#7C938D;line-height:1.7}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  justify-content:space-between;font-size:13px;color:#8FA9A2;
}
.footer-links{display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.footer-links a{color:#8FA9A2;transition:color .22s var(--ease)}
.footer-links a:hover{color:var(--accent)}

/* ============ Modal ============ */
.modal-mask{
  position:fixed;inset:0;z-index:120;display:none;align-items:flex-start;justify-content:center;
  padding:24px 20px;overflow-y:auto;
  background:rgba(11,42,36,.6);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.modal-mask.open{display:flex}
.modal-panel{
  position:relative;width:100%;max-width:520px;margin:auto;
  background:var(--surface);border-radius:20px;padding:28px 24px;
  box-shadow:var(--shadow-2);
}
@media(min-width:768px){.modal-panel{padding:32px}}
.modal-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);background:transparent;color:var(--muted);
  font-size:17px;line-height:1;cursor:pointer;transition:all .22s var(--ease);
}
.modal-close:hover{background:var(--paper);color:var(--brand-900)}
.modal-title{font-size:21px;font-weight:800;color:var(--brand-900);margin:0 0 8px;line-height:1.4;padding-right:36px}
.modal-sub{margin:0 0 22px;font-size:14px;line-height:1.8;color:var(--muted)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;font-size:15px;font-family:inherit;color:var(--ink);
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(28,107,87,.14);
}
.consent{display:flex;gap:10px;align-items:flex-start;margin:6px 0 20px;font-size:13px;color:var(--muted);line-height:1.7}
.consent input{width:17px;height:17px;margin-top:2px;flex:0 0 17px;accent-color:var(--brand-500)}
.form-ok{text-align:center;padding:20px 4px}
.form-ok .ok-icon{
  width:52px;height:52px;border-radius:50%;background:#E6F4EF;color:var(--ok);
  display:grid;place-items:center;margin:0 auto 16px;
}
.form-ok .ok-icon svg{width:24px;height:24px}
.form-ok h4{margin:0 0 8px;font-size:18px;font-weight:800;color:var(--brand-900)}
.form-ok p{margin:0 0 20px;font-size:14px;line-height:1.8;color:var(--muted)}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(16px)}
.reveal.in{opacity:1;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease)}
body.no-scroll{overflow:hidden}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
    --brand-900:#0B2A24;
    --brand-700:#11453A;
    --brand-500:#1C6B57;
    --brand-100:#E4EDE9;
    --accent:#FF5A1F;
    --accent-deep:#E84A12;
    --accent-soft:#FFE7DC;
    --bg:#F6F5F2;
    --surface:#FFFFFF;
    --ink:#12171A;
    --muted:#5B6664;
    --line:#E4E2DC;
    --ok:#12805C;
    --warn:#C2410C;
    --r-card:18px;
    --r-img:20px;
    --r-tag:8px;
    --sh-1:0 1px 2px rgba(18,23,26,.04), 0 8px 24px -12px rgba(11,42,36,.18);
    --sh-2:0 18px 40px -16px rgba(11,42,36,.28);
    --container:1200px;
    --num-font:"DIN Alternate","Barlow Condensed","Oswald",ui-sans-serif,system-ui,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}

  .num{font-family:var(--num-font);font-variant-numeric:tabular-nums;letter-spacing:.02em}

  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 40px;
  }
  @media (min-width:1281px){ .container{max-width:1280px} }

  /* ============ Header ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    height:72px;
    background:rgba(246,245,242,.92);
    backdrop-filter:saturate(160%) blur(10px);
    border-bottom:1px solid var(--line);
    transition:height .25s ease, box-shadow .25s ease, background .25s ease;
  }
  .site-header.scrolled{
    height:64px;
    background:rgba(255,255,255,.96);
    box-shadow:0 10px 30px -20px rgba(11,42,36,.55);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:24px;
    height:100%;
  }
  .logo{display:flex;align-items:baseline;gap:8px;flex-shrink:0}
  .logo-mark{
    font-size:21px;
    font-weight:800;
    letter-spacing:.04em;
    color:var(--brand-900);
  }
  .logo-sub{
    font-size:12px;
    font-weight:400;
    letter-spacing:.14em;
    color:var(--muted);
  }
  .main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
  .nav-link{
    position:relative;
    padding:8px 14px;
    font-size:15px;
    color:var(--muted);
    border-radius:999px;
    transition:color .2s ease, background-color .2s ease;
  }
  .nav-link:hover{color:var(--brand-900);background:rgba(28,107,87,.08)}
  .nav-link.active{color:var(--brand-900);font-weight:600}
  .nav-link.active::after{
    content:"";
    position:absolute;
    left:14px;right:14px;bottom:-2px;
    height:2px;
    background:var(--accent);
    border-radius:2px;
  }
  .header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
  .status-pill{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;letter-spacing:.04em;
    color:var(--brand-700);
    background:rgba(28,107,87,.1);
    padding:6px 11px;border-radius:999px;
  }
  .status-pill .dot{
    width:7px;height:7px;border-radius:50%;
    background:var(--ok);
    animation:pulse 1.8s ease-in-out infinite;
  }
  @keyframes pulse{
    0%,100%{opacity:1;transform:scale(1)}
    50%{opacity:.35;transform:scale(.7)}
  }
  .badge-channel{
    font-size:12px;letter-spacing:.12em;
    color:var(--warn);
    background:var(--accent-soft);
    border:1px solid #FFD2BC;
    padding:6px 10px;border-radius:var(--r-tag);
  }
  .nav-toggle{
    display:none;
    width:42px;height:42px;
    border:1px solid var(--line);
    border-radius:12px;
    background:#fff;
    cursor:pointer;
    padding:0;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:4px;
  }
  .nav-toggle span{
    display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px;
    transition:transform .25s ease, opacity .25s ease;
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

  .drawer-mask{
    position:fixed;inset:0;z-index:70;
    background:rgba(11,42,36,.5);
    opacity:0;visibility:hidden;
    transition:opacity .3s ease, visibility .3s ease;
  }
  .drawer-mask.show{opacity:1;visibility:visible}
  .mobile-drawer{
    position:fixed;top:0;right:0;bottom:0;z-index:80;
    width:82%;max-width:340px;
    background:#fff;
    transform:translateX(101%);
    transition:transform .32s cubic-bezier(.2,.7,.2,1);
    display:flex;flex-direction:column;
    padding:88px 24px 24px;
    box-shadow:-20px 0 50px -30px rgba(11,42,36,.6);
  }
  .mobile-drawer.open{transform:translateX(0)}
  .mobile-drawer .d-label{
    font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:14px;
  }
  .mobile-drawer a.d-link{
    display:block;
    padding:14px 4px;
    font-size:16px;
    color:var(--ink);
    border-bottom:1px solid var(--line);
  }
  .mobile-drawer a.d-link.active{color:var(--brand-500);font-weight:600}
  .drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:10px}
  .drawer-cta .d-note{font-size:12px;color:var(--muted);text-align:center}

  /* ============ Buttons ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:999px;
    font-size:15px;font-weight:600;
    padding:12px 26px;
    border:1px solid transparent;
    cursor:pointer;
    white-space:nowrap;
    transition:transform .22s cubic-bezier(.2,.7,.2,1), background-color .22s ease, color .22s ease, box-shadow .22s ease, border-color .22s ease;
  }
  .btn-primary{
    background:var(--accent);
    color:#12171A;
    box-shadow:0 8px 20px -12px rgba(255,90,31,.9);
  }
  .btn-primary:hover{
    background:var(--accent-deep);
    color:#fff;
    transform:translateY(-1px);
    box-shadow:var(--sh-2);
  }
  .btn-primary:hover .btn-arrow{transform:translateX(4px)}
  .btn-primary:active{transform:scale(.98)}
  .btn-outline{
    background:transparent;
    border-color:var(--line);
    color:var(--ink);
  }
  .btn-outline:hover{
    background:var(--brand-900);
    border-color:var(--brand-900);
    color:#fff;
  }
  .btn-sm{padding:9px 18px;font-size:14px}
  .btn-block{width:100%}
  .btn-arrow{display:inline-block;transition:transform .25s cubic-bezier(.2,.7,.2,1)}

  .text-link{
    display:inline-block;
    font-size:15px;
    font-weight:600;
    color:var(--brand-500);
    background-image:linear-gradient(currentColor,currentColor);
    background-size:0% 1px;
    background-repeat:no-repeat;
    background-position:0 100%;
    transition:background-size .28s cubic-bezier(.2,.7,.2,1);
    padding-bottom:2px;
  }
  .text-link:hover{background-size:100% 1px}

  /* ============ Hero ============ */
  .cat-hero{
    position:relative;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center 40%;
    color:#fff;
    padding:112px 0 80px;
    overflow:hidden;
  }
  .cat-hero::before{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(115deg,rgba(11,42,36,.94) 0%,rgba(11,42,36,.82) 52%,rgba(17,69,58,.72) 100%);
  }
  .cat-hero::after{
    content:"";
    position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:64px 64px;
    opacity:.55;
  }
  .cat-hero-inner{position:relative;z-index:2;max-width:860px}
  .breadcrumb{
    font-size:13px;
    color:rgba(255,255,255,.66);
    display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  }
  .breadcrumb a:hover{color:#fff}
  .breadcrumb .cur{color:#fff}
  .cat-hero .eyebrow{
    display:inline-block;
    margin-top:26px;
    font-size:12px;
    letter-spacing:.2em;
    color:#FFB08C;
    font-weight:700;
  }
  .cat-hero h1{
    font-size:clamp(32px,5.6vw,58px);
    line-height:1.08;
    font-weight:800;
    letter-spacing:-.01em;
    margin:14px 0 20px;
    text-shadow:0 12px 34px rgba(0,0,0,.28);
  }
  .cat-hero .lead{
    font-size:clamp(16px,1.35vw,19px);
    line-height:1.75;
    color:rgba(255,255,255,.86);
    max-width:62ch;
  }
  .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
  .tag{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:.08em;
    padding:8px 15px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,.3);
    background:rgba(255,255,255,.08);
    color:#fff;
    backdrop-filter:blur(4px);
  }
  .tag i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block}
  .tag em{font-style:normal;color:rgba(255,255,255,.7)}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
  .hero-actions .btn-outline{border-color:rgba(255,255,255,.42);color:#fff}
  .hero-actions .btn-outline:hover{background:#fff;color:var(--brand-900);border-color:#fff}

  /* ============ Sections ============ */
  .section{padding:104px 0}
  .section-sm{padding:72px 0}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:32px;margin-bottom:46px;flex-wrap:wrap;
  }
  .eyebrow-line{
    font-size:12px;letter-spacing:.18em;font-weight:700;color:var(--accent);
  }
  .section-title{
    font-size:clamp(24px,3.4vw,40px);
    line-height:1.18;
    font-weight:800;
    letter-spacing:-.01em;
    margin-top:12px;
  }
  .section-desc{color:var(--muted);font-size:16px;max-width:56ch;margin-top:14px}

  /* ============ 图像卡网格 ============ */
  .card-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
  }
  .v-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--sh-1);
    display:flex;flex-direction:column;
    transition:transform .3s cubic-bezier(.2,.7,.2,1), box-shadow .3s ease, border-color .3s ease;
  }
  .v-card:hover{
    transform:translateY(-4px);
    box-shadow:var(--sh-2);
    border-color:rgba(28,107,87,.42);
  }
  .v-card-media{
    position:relative;
    aspect-ratio:16/9;
    overflow:hidden;
    background:var(--brand-900);
  }
  .v-card-media img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .55s cubic-bezier(.2,.7,.2,1);
  }
  .v-card:hover .v-card-media img{transform:scale(1.04)}
  .v-card-media .chip{
    position:absolute;left:14px;top:14px;
    font-size:12px;letter-spacing:.1em;
    color:#fff;
    background:rgba(11,42,36,.78);
    padding:5px 11px;
    border-radius:var(--r-tag);
  }
  .v-card-body{padding:22px 22px 18px;display:flex;flex-direction:column;flex:1}
  .v-card-body h3{font-size:19px;font-weight:700;line-height:1.45}
  .v-card-body p{
    margin-top:10px;
    font-size:15px;color:var(--muted);line-height:1.7;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .v-card-spec{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:8px;
    margin-top:18px;
    padding-top:14px;
    border-top:1px solid var(--line);
  }
  .v-card-spec span{display:block}
  .v-card-spec .k{font-size:11px;letter-spacing:.1em;color:var(--muted)}
  .v-card-spec .v{font-size:15px;font-weight:700;color:var(--brand-900);margin-top:2px}

  /* ============ 参数带 ============ */
  .stat-band{
    background:linear-gradient(180deg,#EAF1EE 0%,#F1F5F2 100%);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:56px 0;
  }
  .stat-grid{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:28px;
  }
  .stat-item{
    position:relative;
    padding-left:20px;
    border-left:3px solid var(--accent);
  }
  .stat-item .stat-num{
    font-family:var(--num-font);
    font-variant-numeric:tabular-nums;
    font-size:clamp(40px,4.6vw,60px);
    line-height:1;
    font-weight:700;
    color:var(--brand-900);
    letter-spacing:-.01em;
  }
  .stat-item .stat-num small{font-size:.42em;font-weight:600;margin-left:4px;color:var(--brand-500)}
  .stat-item .stat-label{
    margin-top:10px;
    font-size:13px;
    letter-spacing:.06em;
    color:var(--muted);
  }

  /* ============ 图文交替 ============ */
  .split{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:56px;
    align-items:center;
  }
  .split + .split{margin-top:80px}
  .split-media img{
    width:100%;
    aspect-ratio:4/3;
    object-fit:cover;
    border-radius:var(--r-img);
    box-shadow:var(--sh-1);
  }
  .split-copy h3{
    font-size:clamp(22px,2.4vw,30px);
    font-weight:800;
    line-height:1.25;
  }
  .split-copy p{margin-top:16px;color:var(--muted);font-size:16px}
  .check-list{margin-top:24px;display:grid;gap:14px}
  .check-list li{
    display:flex;gap:12px;align-items:flex-start;
    font-size:15px;color:var(--ink);
    padding:14px 18px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:14px;
    transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
  }
  .check-list li:hover{border-color:rgba(28,107,87,.45);transform:translateX(3px);box-shadow:var(--sh-1)}
  .check-list .ico{
    flex-shrink:0;width:22px;height:22px;border-radius:50%;
    background:var(--brand-100);color:var(--brand-700);
    display:flex;align-items:center;justify-content:center;
    font-size:12px;font-weight:700;margin-top:3px;
  }
  .check-list b{font-weight:700}
  .check-list span small{display:block;color:var(--muted);font-size:14px;font-weight:400}

  /* ============ 参数型信息条 ============ */
  .spec-strip{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:0;
    border:1px solid var(--line);
    border-radius:14px;
    background:var(--surface);
    overflow:hidden;
    margin-top:22px;
  }
  .spec-strip div{
    padding:12px 14px;
    border-right:1px solid var(--line);
  }
  .spec-strip div:last-child{border-right:none}
  .spec-strip .k{font-size:11px;letter-spacing:.1em;color:var(--muted)}
  .spec-strip .v{font-size:15px;font-weight:700;color:var(--brand-900)}

  /* ============ 分栏问答 ============ */
  .qa-split{
    border-top:1px solid var(--line);
  }
  .qa-row{
    display:grid;
    grid-template-columns:minmax(220px,340px) 1fr;
    gap:32px;
    padding:30px 8px;
    border-bottom:1px solid var(--line);
    transition:background-color .25s ease;
  }
  .qa-row:hover{background:rgba(255,255,255,.72)}
  .qa-q{
    font-size:17px;font-weight:700;color:var(--brand-900);
    display:flex;gap:12px;align-items:flex-start;line-height:1.6;
  }
  .qa-q .q-idx{
    font-family:var(--num-font);
    font-size:13px;font-weight:700;color:var(--accent);
    letter-spacing:.08em;flex-shrink:0;margin-top:4px;
  }
  .qa-a{font-size:15px;color:var(--muted);line-height:1.85}
  .qa-a strong{color:var(--ink);font-weight:600}

  /* ============ CTA + 表单 ============ */
  .cta-section{
    background:var(--brand-900);
    color:#fff;
    padding:96px 0;
    position:relative;
    overflow:hidden;
  }
  .cta-section::after{
    content:"";
    position:absolute;right:-120px;top:-120px;
    width:460px;height:460px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,90,31,.28),rgba(255,90,31,0) 68%);
  }
  .cta-grid{
    position:relative;z-index:2;
    display:grid;
    grid-template-columns:1fr 460px;
    gap:64px;
    align-items:start;
  }
  .cta-copy h2{
    font-size:clamp(26px,3.4vw,40px);
    font-weight:800;line-height:1.2;letter-spacing:-.01em;
  }
  .cta-copy p{margin-top:18px;color:rgba(255,255,255,.76);font-size:16px;max-width:52ch}
  .cta-points{margin-top:30px;display:grid;gap:12px}
  .cta-points li{
    display:flex;gap:12px;align-items:center;
    font-size:15px;color:rgba(255,255,255,.9);
  }
  .cta-points i{
    width:8px;height:8px;border-radius:2px;background:var(--accent);display:block;flex-shrink:0;
  }

  .form-card{
    background:var(--surface);
    color:var(--ink);
    border-radius:20px;
    padding:30px;
    box-shadow:0 30px 60px -34px rgba(0,0,0,.6);
  }
  .form-card h3{font-size:20px;font-weight:800}
  .form-card .form-note{font-size:13px;color:var(--muted);margin-top:8px}
  .field{margin-top:16px}
  .field label{display:block;font-size:13px;font-weight:600;margin-bottom:7px}
  .field input,.field select,.field textarea{
    width:100%;
    min-height:46px;
    padding:11px 14px;
    border:1px solid var(--line);
    border-radius:12px;
    background:#FCFCFA;
    font-size:15px;
    transition:border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
  }
  .field textarea{min-height:88px;resize:vertical}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;
    border-color:var(--brand-500);
    background:#fff;
    box-shadow:0 0 0 3px rgba(28,107,87,.16);
  }
  .consent{
    display:flex;gap:10px;align-items:flex-start;
    margin-top:18px;font-size:13px;color:var(--muted);line-height:1.6;
  }
  .consent input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand-500);flex-shrink:0}
  .form-card .btn{margin-top:20px}
  .form-success{
    display:none;
    text-align:center;
    padding:26px 10px;
  }
  .form-success.show{display:block}
  .form-success .ok-ico{
    width:52px;height:52px;border-radius:50%;
    background:var(--brand-100);color:var(--brand-700);
    display:flex;align-items:center;justify-content:center;
    font-size:24px;margin:0 auto 14px;
  }
  .form-success h4{font-size:18px;font-weight:800}
  .form-success p{font-size:14px;color:var(--muted);margin-top:8px}

  /* ============ Modal ============ */
  .modal-mask{
    position:fixed;inset:0;z-index:90;
    background:rgba(11,42,36,.6);
    backdrop-filter:blur(8px);
    display:flex;align-items:center;justify-content:center;
    padding:24px;
    opacity:0;visibility:hidden;
    transition:opacity .26s ease, visibility .26s ease;
  }
  .modal-mask.open{opacity:1;visibility:visible}
  .modal-panel{
    width:100%;max-width:520px;
    background:#fff;
    border-radius:20px;
    padding:30px;
    position:relative;
    max-height:88vh;
    overflow-y:auto;
    transform:translateY(14px) scale(.98);
    transition:transform .28s cubic-bezier(.2,.7,.2,1);
    box-shadow:0 40px 80px -40px rgba(0,0,0,.7);
  }
  .modal-mask.open .modal-panel{transform:none}
  .modal-close{
    position:absolute;right:14px;top:14px;
    width:36px;height:36px;border-radius:50%;
    border:1px solid var(--line);background:#fff;
    cursor:pointer;font-size:18px;line-height:1;color:var(--muted);
    transition:background-color .2s ease,color .2s ease;
  }
  .modal-close:hover{background:var(--brand-900);color:#fff;border-color:var(--brand-900)}
  .modal-panel h3{font-size:20px;font-weight:800;padding-right:36px}
  .modal-panel .modal-sub{font-size:13px;color:var(--muted);margin-top:8px}

  /* ============ Footer ============ */
  .site-footer{background:var(--brand-900);color:rgba(255,255,255,.86);padding:76px 0 30px}
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:44px;
  }
  .footer-logo{display:flex;align-items:baseline;gap:8px;margin-bottom:18px}
  .footer-logo .logo-mark{color:#fff}
  .footer-logo .logo-sub{color:rgba(255,255,255,.55)}
  .footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:40ch}
  .footer-col h4{
    font-size:14px;font-weight:700;color:#fff;letter-spacing:.08em;margin-bottom:16px;
  }
  .footer-col a,.footer-col .f-link,.footer-col .f-meta{
    display:block;
    font-size:14px;
    color:rgba(255,255,255,.68);
    margin-bottom:11px;
    transition:color .2s ease, transform .2s ease;
  }
  .footer-col a:hover{color:var(--accent);transform:translateX(2px)}
  .footer-col .f-meta{color:rgba(255,255,255,.45);font-size:13px}
  .footer-bottom{
    display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
    margin-top:52px;padding-top:22px;
    border-top:1px solid rgba(255,255,255,.14);
    font-size:13px;color:rgba(255,255,255,.56);
  }
  .footer-links{display:flex;gap:20px;flex-wrap:wrap}
  .footer-links a{transition:color .2s ease}
  .footer-links a:hover{color:var(--accent)}

  /* ============ Reveal ============ */
  .reveal{
    opacity:0;
    transform:translateY(16px);
    transition:opacity .65s cubic-bezier(.2,.7,.2,1), transform .65s cubic-bezier(.2,.7,.2,1);
  }
  .reveal.in{opacity:1;transform:none}

  /* ============ Responsive ============ */
  @media (max-width:1280px){
    .container{padding:0 32px}
  }
  @media (max-width:1024px){
    .container{padding:0 24px}
    .main-nav{display:none}
    .status-pill,.badge-channel{display:none}
    .nav-toggle{display:flex}
    .header-actions{margin-left:auto}
    .section{padding:76px 0}
    .cat-hero{padding:88px 0 64px}
    .split{gap:36px}
    .split + .split{margin-top:60px}
    .cta-grid{grid-template-columns:1fr;gap:44px}
    .cta-section{padding:76px 0}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  }
  @media (max-width:860px){
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
    .split{grid-template-columns:1fr;gap:28px}
    .split.reverse .split-media{order:2}
    .qa-row{grid-template-columns:1fr;gap:12px;padding:26px 0}
  }
  @media (max-width:640px){
    .container{padding:0 20px}
    .logo-sub{display:none}
    .section{padding:56px 0}
    .cat-hero{padding:72px 0 56px}
    .card-grid{grid-template-columns:1fr}
    .stat-band{padding:44px 0}
    .stat-grid{grid-template-columns:1fr;gap:26px}
    .form-card{padding:22px}
    .modal-panel{padding:24px}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .spec-strip{grid-template-columns:1fr}
    .spec-strip div{border-right:none;border-bottom:1px solid var(--line)}
    .spec-strip div:last-child{border-bottom:none}
  }

  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition:none !important}
    .reveal{opacity:1;transform:none}
    html{scroll-behavior:auto}
  }